Im going to fit the blitz nur spec s to the scoob not bothering with the centre section doesnt seem to be much point as it allready has the prodrive centre pipe.
However i was wondering if anyone has a dump valve fitted and wondered if it caused any engine problems.
I was looking at the HKS SSQV but i had this on my wifes astra vxr and it made the car perform awefully, well i think it was the HKS as it worked fine before i fitted it and again after i took it off..
Please advise.
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